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NEETChemistryThermodynamics (C)

Given a change in state of a system, how can we determine whether heat was added to or removed from the system?

Options

  1. AIf the internal energy of the system increased, then heat was added to the system. If the internal energy of t
  2. BIf the entropy of the system increased, then heat was added to the system. If the entropy of the system decrea
  3. CIf the temperature of the system increased, then heat was added to the system. If the temperature of the syste
  4. DNone of the above

Correct answer

A. If the internal energy of the system increased, then heat was added to the system. If the internal energy of t

Step-by-step solution

The change in internal energy of a system is equal to the sum of the heat transferred to the system and the work done on the system. If the internal energy of the system increased, then heat must have been added to the system. If the internal energy of the system decreased, then heat must have been removed from the system.

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